Onkyo TX-8050S Service Manual page 9

A B
SCHEMATIC DIAGRAM - 4 (SD - 4)
Audio signal line (CD)
AUDIO INPUT SECTION
1
from TUNER PACK
ALL
P4401A
BCAF-0704
Q4402
2SC2235-Y
2
100(1W)
R4415
R4416
4.7K
TP4001
NJM4580 8 5 C4401 R4413
C4407 R4407 7 47/25 22k
Q4401A
47/25 1K 6 R4403
4
8.2K
R4405
8.2K
C4405
3
102J
R4418
NC
C4406
102J
R4406
8.2K
2 R4404
C4408 R4408 1 8.2K
Q4401B
47/25 1K 3 C4402 R4414
NJM4580
47/25 22k
NJM4580
5
C4312 R4316
7
Q4301A
6 22/50 820
R4314
1.2K
C4304
P4001 47/50 C4308 C4310
472J 152J
Earth plate
C4320
6 R4302
4 Rch 102J
R4312
R4310
1K
4 560K 47K
PHONO
R4309 R4311
R4301
5 560K 47K
Lch C4319
1K
102J
C4307 C4309
C4303
472J 152J
3 47/50
CD Rch
2 R4313
C4311
1.2K R4315
1
Q4301B
1
3
22/50 820
NJM4580
2
Lch
R4002
7
330
J930
R4001
330
5
P4002
Rch
R4008
9
TAPE OUT 2.2K
7
Lch
R4007
8
2.2K
R4012
6
Rch
330
TV/TAPE IN 4
R4011
5
Lch
330
R4016
3
Rch
330
6 1
GAME
2 R4015
Lch
330
10 C4013
P4003 102J
Rch 3 R4020
330
1
CBL/SAT
Lch 2 R4019
330
C4014
P4004 102J
4
R4024
9
Rch
2.2K
VCR/DVR
7
OUT
8 R4023
Lch
2.2K
7
6 R4028
Rch
330
4
VCR/DVR
IN
5 R4027
Lch
330
3 R4032
Rch
330
1
BD/DVD
2 R4031
Lch
330
10 C4015
102J
8
C D
L channel
R channel
to SD-6 K-6
to SD-10 A-1 to SD-10 A-2
DG PWB
VIDEO/UPORT VIDEO/UPORT
ALL ALL
3P-->8030 15P-->8050
JL402A JL403A P4404A
to SD-5 G-3
J931
TU_CLK
TU_SDA
-15V
+15V
4.5mA
R4411
100(1/4W)
R4412
100(1/4W)
4.5mA
Z2R
Z2L
4.53mA
R4319
100(1/4W)
R4320
100(1/4W)
4.53mA
TX-8030 / TX-8050
E F
to DS-13 G-3
to SD-6 D-1 DSP PWB
to DAB/HDR
DG PWB
NO USE 8050
ALL
P4405A P4406A NC
Only for TX-8050
Z2NET_R
C4052
Z2NET_L 47/50
C4051
DAC_FL 47/50
C4037
DAC_FR 47/50
C4038
47/50
R4058 220K
R4055
R4057 220K
R4056
80
N.C.
79
IN-L9
78
IN-R9
77
N.C.
76
INLA/RECL1
75
INRA/RECR1
74
N.C.
73
IN-L8
72 PHONO
IN-R8
71
IN-L7
70 TUNER
IN-R7
69
IN-L6
68 CD
IN-R6
67
IN-L5
66 GAME
IN-R5
65
R2A15218FP
IN-L4
64 TV/TAPE IN
IN-R4
63
Q4001
IN-L3
62 CBL
IN-R3
61 (Botom view)
IN-L2
60 VCR
IN-R2
59
IN-L1
58 DVD
IN-R1
57
N.C.
56
C4031
AGND
47/25 55
ADCR
54
ADCL
53
C4032
N.C.
47/25
52
AVEE
51
MUTE
3 2
4 1
E903
G H I
to SD-7 A-2
PREOUT/ZONE2/RS232 PWB
ALL
JL407A JL409A
+BDG
-15V
+15V
AMUT
VOLH
SEC1H
APOWER
IPROTECT
VPROTECT
SP_A
SP_B
RB_L
RB_R
PREOUT_R
PREOUT_L
220K
220K
R4064 4.7K
R4063 4.7K
R4062 4.7K
R4061 4.7K
R4060 4.7K
R4059 4.7K
1
N.C.
2
SBLC
3
SBL-OUT
4
AGND
5
SBR-OUT
6
SBRC
7
AGND
8
SLC
9 C4103 104J
SL-OUT
10 R4107 220K
AGND
11
SR-OUT
12
SRC
13
N.C.
14
SWC C4102
15 R4104 R4106
SW-OUT
Q4004
16 270 100
47/50 RN1441
AGND
17
C-OUT
18
CC
19
AGND
C4022 47/25
20
FLC
21 RchOUT
FL-OUT
22
Q4003
AGND
C4101
23 LchOUT R4103 RN1441 R4105
FR-OUT
C4021 47/25
24
47/50 270 100
FRC
25
N.C.
26 C4028 474
BASS_L1
R4042
27
BASS-L2 70.75mA
28 C4026 823J
1.8K
TREL
C4024 223J
29 11.7V
N.C.
R4051 R4053
30 6.85V 15V
AVCC
+7V 47(1W)
68(1W)
0.338W 0.24W
70.1mA
0.331W 0.234W
R4052 R4054
-7V
-6.85V -15V
68(1W) 47(1W)
-11.6V
TX-8030 / TX-8050
J K
RB
NO USE
JL408A
VOLH
SEC1H
APOWER
IPROTECT
VPROTECT
HPDET
SP_A
SP_B
+BDG
DGND
Q4006
RN1441
Lch
AGND
Rch
RN1441
Q4005
GND15
+15V
-15V